William e



(No Model.)

W. E. SPARKS.

PADLOGK.

Patented July 21, 1891.

' Unitas STATES ATENT Prion.

\VILLIAM E. SPARKS, OF NElV HAVEN, CONNECTICUT, ASSIGNOR TO THE SARGENTdc COMPANY,,OF SAME PLACE.

PAD Look.

SPECIFICATION forming part of Letters Patent No. 456,345, dated July 21,1891.

Application filed April 20, 1891.

To all whom it may concern:

Be it known that I, WILLIAM E. SPARKS, of New Haven, iuthe county of NewHaven and State of Connecticut, have invented a new Improvement inPadlocks; and 1 do hereby declare the following, when taken inconnection with accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of I this specification, andrepresent, in-

Figure 1, a face view of the lock, one side of the case removed, theparts being in the normal or locked position; Fig. 2, the same as Fig.1, the parts being represented in the unlocked position; Fig. 3, avertical central section cutting on line w a: of Fig. 1; Fig. at, theslide detached; Fig. 5, the key;Figs. 6 and 7, modifications.

This invention relates to an improvement in that class of padlocks inwhich the shackle is hinged near one edge of the case, its other endadapted to pass into the opposite side of the case and engage themechanism Within the case, and particularly to that class in which thebolt-engaging device is combined with several tumblers adapted to beacted upon by a fiat key introduced through the bottom of the case, theobject being a simple construction, and in which the shackle will bereleased by a movement of the key different from that by which thetumblers are operated; and the invention consists in the construction ashereinafterdescribed, and particularly recited in the claims.

A represents the case, which may be of any desirablefshape; B, theshackle hung by one end upon a pivot C at one side of the case, theother or nose end D of the shackle being adapted to pass into acorresponding opening E through the case opposite the pivot, and asusual in this class of looks.

I first illustrate theinvention as for aspringlockthat is to say, a lockin which the shackle is engaged by simply forcing the free end of theshackle into the case without the aid of the key, the key being employedto release the shackle.

F represents the dog hung upon a pivot G below the shackle, andext-ending upwardp swings in a plane parallel with the plane of Serialno. 389,638. (No model.)

the shackle. At its upper end the dog is conthe shackle when in thenormal position. The top of the nose of the dogis beveled, as shown, sothat the dog may be forced backward as the shackle is introduced, and asusual in spring-locks.

To operate the dog so as to withdraw it from the locked position, aslide K is arranged in the case, so as to be moved in a plane parallelwith the plane of the shackle, and is supported between suitable guidesL M near the forward end, and at its rear end it is forked, as at N, soas to slide upon a stationary post 0 in the case. The slide extends uponone side of the dog, and at itsforward end is provided with a stud orshoulder P, which takes a bearing upon the forward side of the dog, asseen in Figs. 1 and 2, and so that as the slide is moved from the normalposition seen in Fig. 1 to that seen in Fig. 2 it will draw the dog fromits looking or normal position, as seen in Fig. 1, to that seen in Fig.2, and take the'dog out of engagement with the shackle,'so as to leavethe shackle free, as'seen in Fig. 2.

The key Q is fiat, and-the case is constructed with a key-hole R throughthe bottom below the slide K, and the slide K is constructed with anotch S upon its lower edge, (see Fig. 4,) with which the end of the keywill engage as it is introduced through the key-hole, as seen in Fig. 1,and when so engaged, if the handle or bow end of the key be forcedforward,it will act through the key-hole as a leshackle, and yieldinglyhold it engaged with ver upon a fulcrum, and so that under such movementit will force the slide K from its forward or locked position to itsrear or unlocked position, as seen in Fig. 2, and withdraw the dog fromits engagement with the shackle, as before described. When the key iswithdrawn or the force removed, the spring J or other suitable springwill force the slide and the dog to return to their normal or lockedposition.

To complicate the mechanism of the look so that it may not be readilyopened without the proper key, tumblers T (more or less in number) arehung upon the post at one side of the slide K and so as to swing in avertical plane parallel with the plane of the slide. 5 The tumblers areconstructed with a lockingshoulder U, which when free engages with astump V on the slide, as seen in Fig. 1, and so as to hold the slide inthe locked position. The tumblers are each constructed with a gate ornotch IV, which at a predetermined point come into line with the stumpV, as usual in tumbler-locks, the position of the notches in the severaldogs differing the one from the other, so that a different extent ofmovement is required for the respective tumblers in order to bring thegates into line with the stump.

The lower edge of the tumblers is exposed to the end of thekey, and theend of the key, as seen in Fig. 5, is constructed according to thedifferent positions of the gates in the tumblers, and so that when thekey is inserted, as in Fig. 1, it will raise the tumblers, so as tobring them into line with the stump as the key engages with the slide,thus leaving the slide free to be moved rearward under the swingingmovement of the key, as seen in Fig. 2.

In Fig. 6 I illustrate the invention as applied to a bolt-lock that is,one which requires a bolt to be withdrawn by the key in unlocking andadvanced by the key for the locking movement. The same slide K isemployed as in the first illustration; but instead of combining the dogwith the slide a projecting finger X is formed on the slide, whichserves as a bolt to enter the opening I in the end of the shackle.Otherwise the construction and operation of the lock are the same asthat first described.

The slide and bolt of Fig. 6 may be constructed so as to operate as aspring-lock by beveling the nose of the bolt X, as seen in Fig. 7, andproviding a suitable spring Y for throwing the slide.

When the lock is constructed as a springloek, it is desirable that aspring should be provided to throw the shackle to the open position assoon as it is free from the locking mechanism. This may be any of theusual 50 constructions, here represented as a torsionspring Z, (seeFigs. 1 and 2,) arranged upon the pivot of the shackle.

I elaim- 1. In a padlock, the combination of a case, a shackle hinged byone end at one side of the ease, the nose of the shackle adapted toswing into an opening in the case, a slide within the case arranged tomove in a plane parallel with the shackle, mechanism between the slideand nose of the shackle to engage the nose of the shackle within thecase, the ease constructed with a key-hole through its bottom and belowsaid slide, and the key constructed to pass through the said key-holeand engage the said slide and adapted to operate upon the said key-l1oleas a fulcrum,

substantially as described, and whereby a swinging movement of the saidkey upon the key-hole as a fulcrum will impart longitudinal movement tosaid slide.

2. In a padlock, the combination of a case, a shackle hinged by one endat one side of the case, the nose of the shackle adapted to enter thecase through an opening at the op posite side, a slide arranged withinthe case, so as to move in a plane parallel with the plane of theshackle, a dog hung in the case below the said slide and so as to swingin a plane parallel therewith and extending above the slide, its upperend forming anose to engage the end of the shackle within the ease,

the slide and dog connected, so that longitudinal movement of the saidslide imparts swinging movement to said dog, the caseconstructed with akey-hole through its bottom, and a key to pass through said key-hole andengage the said slide, the said key adapted so operate as alever in saidkey-hole as its fulcrum, substantially as described, and whereby theswinging movement imparted to said key will impart correspondinglongitudinal movement to said slide and swinging movement to said dog.

In testimony whereof I have signed this specification in the presence oftwo subscribin g witnesses.

SVI'LLIAM E. SPARKS.

\Vitnesses:

I. B. SARGENT, CHAS. L. BALDWIN.

